Pump



June 6, 1944. Q C, JETTER l 2,350,898

PUMP

INVENTOR.

Patented June 6, 1944 UNITED STATES PATENT c OFF-ICE Y l n 2,350,89vsl nCytus C. ,letten Grandltapids, Mich. Application separater 1s, 1943',serial No. 502,082

comme. (ci. '10s-195),"

This invention relates to improvements in pumps.

The main objects of this invention are:

First, to provide a packing for the pump rods of oil well and likeIpumps Vwhich is capable of withstanding the severe working conditionsyto which such pumps are subjected in use, at the same time allow'afreer movement kof thev pump rod packing plunger or the packed portionof the pump "rod whereby the wear is kreduced -to a minimum.

Second, to provide a resilient supporting connection between the pumprod packing cylinder and the casing which permits the adjustment of thereciprocating parts to each other and thereby minimizes friction andwear,

Third, to provide a structure in which a plurality of packing rings arespacedthroughout the length of the packing plunger thereby providing along bearing with sufiicient clearance `between the plunger and thecylinder to minimize friction and'at the same-time provide an efficientseal. 1 i

Fourth, to provider4 a structure vhaving these advantages which may beadapted to standard l or widely used types of pumps.

Objects relatingto details and economiesv of the invention will appearfrom-the'de'scription to follow. The invention is dene'd'in'the'claims.A preferred embodiment of the invention is illustrated in theaccompanying drawing, in

which:

Fig. 1 is a'fragmentary side elevation partially "in longitudinalsection of a structure embodying my invention as applied to an oil wellpump.

Fig. 2 is an enlarged fragmentary vie'wmainly in longitudinal section'illustrating the details ofthe mounting of the packing' cylinder 4inits relation to the pump casing. Y Fig. 3 is a fragmentary Viewpartially in 'longitudinal section of Ya `mcniiied form orembodilmentofmyinventon. y N

InA the embodiment the tubular pump casing ori the upperV end of I thepipe of a well and@ Vthe Aplur'iger rod. '3L-is T- fitting threaded'ontheend of the casing andinas an oil outlet pipe 4 connected thereto.lThreaded linto the outer vend of this coupling-'is'lan adapter 5 havingan internal bore is' and'externallvl threaded at `1 to receive the'vclamping sleeve or cap 8. The sleeve 8 hasan inturned flange 9 at itsAupper end. The pum'p rod packing cylinder projects into the casing I asubstantial distance andalso projects from the casing.

The pump rod packing cylinder 'I I reciprocatcs fwithinithis cylinderIU.y

Theycylinder I0 is provided with an annular flange from but iixedlysecured thereto as by Welding as indicated at I3. This supporting memberis sunicient depth case, an annularthrus'thmember I8 disposed betweenthe rubber orl other resilient supporting elements- I4, the inner ofwhich is .seatedon the end offthe adapter 5 and the outer of whichisbetweenthe iiange 9 and the supporting flange I2 on the cylinder.

, .The diameter of the cylinderrelative to the internal diameter-of thecasingl I, vthe adapter 5, and thefiange v9 of the `clamping collar issuch ,asL to permit a substantial vtilting movement of the.cylinderwhichrispermitted by its resilient supporting elements. Thesesupporting members also constitute .packing members.

The vpump rod packing plunger Ais provided with a pluralityof verticallyspaced packing ring grooves Idwhich are preferably arranged inverticallyspaced groups as illustrated. 'Ifhe split packingor: plungerrings I6 vare preferably of the resilient metallic type and they arearranged in the.,grooves The pecking ring ,grooves are 0f to allow freeradial movement of the packing ringstherein and they also havesufficient tolerance in their axial width to permit this free movement.This provides an effective packing while permitting clearance betweenthe packing plunger andthe cylinder tov allow very freereciprocatingmovement of the plungerf' The packing cylinder is of suchlength as to `In the fembodim nt of myvinvention shown in Fig. k3, theclamping sleeve I1 is threaded directly upon the take-oli` coupling 3.In this is seated on theend of the take-oifcoupling 3 to support theillustrated, `I 'represents v I2. preferably formed separately" there- Yclimbs,

Aduce, undue wear innerof the resilient support members I4.

In' structures embodying my invention, it is not necessary to replacethe packings frequently asvisvnecessary in the widely used type of oil Iattribute the Awear on the packing in these v,pumps quite largely to theswaying of the pump rod vduring vthe'reciprocal-.ing movement tliereof.yThis results"inV wearing the packing vvd randsoon necessitates there-packor' results" 'in' the leaking'of oil which is not out, 0f ineYonly]'vl/"aste'f'ulbutr constitutes serious re hazard.

has been demonstratedby 'use' that my invention cuts this replacementtoa minimum. The

swaying or tiltingof the pump rod does not pron 'on the packing'and,further, the packing rings vare so Varranged throughout the length ofthe packingrod that. a long bearing is provided and this ,also minimizeswear on the `cylinder wall or on the plunger.-

The timeV element is also lan important factor as it' isnot necessarytostop the pumping operationV when the packings are being renewed 'orreplaced, and further than'that, the packing fringsA are v ery longlived and while they :provide ari-'effective Aseal Athey are sufcientlylubricated to avoid excessive wear.

useated on the Yend/.of`l s resilient'.

2 packing 1c s theinternal'V diameters' oiAv the"l casing, the'adapter,`an`d`offtheY flange 'of said clampingsleeve, Where- I have illustratedand described my improvements in highly practical embodiments thereof. Ihave not attempted to illustrate or` describe other adaptations orembodiments as it is believed that this disclosure will enable thoseskilled in the art `to embodyor adapt my invention as may be desired.

Having thus described my invention, what-Iv claim as new and desire tosecure byLetters Patent, is:

1. In a pump, thecombination of a tubular-V casing provided with atake-oft' T-coupling, an

Cil

pump rod packing cylinder extending into said casing and provided withan annular supporting llange, inner and outer annular resilientsupporting elements on opposite sides of said flange, the inner elementbeing` seated on the end of said adapter, a clamping sleeve threadedupon said adapter and having an inturned ilange at its -outer endengaging the resilient support element,

the diameter of said packing cylinder being substantially less than theinternal diameters of the l casing, the adapter, and of the ilange ofsaid adapter threaded into the upper arm of-saidM coupling, a vpump rodpacking cylinder extend ,inguintolsa-id casingand provided with anannular g supporting ilange', ,annular lresiliei'it supporting'elementsv arrangedone :above`A andl the otlierlbelow said 'flange "thelower element being f adapter, a clamping sleeve threadedimn Saidfadaptr:and having an inturned ilang'egat'iits outer end engaging therportelement-lthe1dia eter of A,said

ylindrer i being j fsubstalntiallyV 4less4 "than by substantial tiltingmovementof said cylinder -on-its said resilient supporting elementsis'permitted, a pump/rod, provided Withga packing Vplungerreciprocating'within saidpacking cylin-V der` and having verticallyspaced groups of pack- Y, ingring grooves, andsplit resilient metal-licpackl.ing ringsrrarranged in said packing ringgroove's.

2. In a pump, the combination of a tubular casing provided withatake-oft T-coupling, anv

adapter threadedV into, the upperl arm. offsaid coupling, afpumprodpacking cylinderextending int/o.. said casing and providedwith. an,annular supporting Li-il'airige," annular` resilient Aysupportingelements arranged fone above Aandthe other `belowsaid ilangathe lower element' being seated'onthe'end ofsaid adapter a clamping.sleevethreaded upon said `adapterandhaving an inturned flange at itsouterendengaging .the

resilient support element, the diameterof. saidr packing;cylindervbeingV substantially less thanv the internal diameters1oi.-the casing,the adapt'- er,` and of theellange of .saidl clamping sleeve,

whereby-substantial ,tilting l movement ofv said cylinder on its saidresilient supporting elements fis` permitted, and `a-.pump rod provided'with a packingplunger --reciprocating within saidl .pack-v ingcylinder.l f 3. In apump, the combination of; a tubular casingprovided with-atake-,off ',l"ooupling, anl y adapterV threaded into the upper armofsaidcoupling, a. p umprod. a pump rodpackingcylinder extendingr into'said casingpand provided', vi'r'i'tliA an annular supportingk llange;annular resilient-supporting elements: arranged eneigabove; and'-itiieVVV Vother' below said` flange, the'lower lelementbeing seatedVon Atheendl of lsaid adapter, aclamlping sleeve threaded upon saidadapterV and having. an

.inturned'ange' atpits outer endengaging theiresilientjsupport,element.` the diameter. `0f said packing cylinder vbeing `substantiallyAless than the internal diameters,oithecasing, the adapter,

and of the ange'of said clampingsleeve, whereby substantial tiltingInovenient of. said cylinder on .its said resilient supportingielementsis per- 'mittedxand a packingplunger mounted on said :pump rodandreciprocatingjwithin said cylinder. 1.4:. In-afpurnp,thecombinationof; ay tubular Y* icasirig,';an-adapter at the end Aof said casing, a

clamping sleeve, whereby substantial tilting movement of said cylinderon its said resilient supporting. elements is permitted, a pump rodprovided with a packing plunger reciprocating Within said packingcylinder andl having'a plurality of spaced packing ring grooves, andsplit resi-lient metallicpacking rings arranged in said packing ringgrooves. 1

5. Ina pump, the combination of a tubular casing, an adapter at the endof said casing, a

pump rod packing. cylinder extending into said `casingV and providedwith an annular supporting hange, vinner and outer annular resilientsupl porting elements on opposite sides vof said ange,

the inner element being seated on the end' of said adapter, a clampingsleeve threaded upon said adapter and having an inturned ilange at itsouter end engaging the resilient support element, the diameter of saidpacking cylinder being substantiallyless than the internaldiameters ofthe casing, the adapter, and of the flange Vof said clamping sleeve,whereby substantial tilting .movement of said cylinder on its saidresilient supporting elementsv is permitted,` and a upump rodl providedwith a packing plunger reciprocating within said packing cylinder.

6. In a pump, the combination of a tubular casing, a pump rod packingcylinder disposed within said casingto extend therefrom and having anannularsupporting'flange, .l inner vand outer resilientsupportingelements disposed on opposite sidesof said vflange andytiltably supporting saidicylinder withinthe casing, the in- Yner beingin supported relation tothe cylinder, a :threaded clamping sleeveengaging lthe outer element, a pump rod provided with a packing plungerreciprocating within said packing cylinder and having vertically spacedpacking ring' grooves therein, and resilient split 'metallic packingrings arranged in said grooves.

7. In a pump, the combination of a tubular casing, a pump rod, al pumprod packing cylinder disposed withinsaid casing :to extend therefrom andhaving an annularsupporting angainner -and outer'resilient supportingelements disposed on opposite sides of sadange, the inner being insupported relationto the cylinder, a threaded clamping sleeve engagingthe outer element and a packing plunger mounted on said pump rod andreciprocating Within said ,-cylinder.

.Y 8. In a pump, the combination of a tubular casing, a pump'rod, a pumprcdfpacking cylinder extending into said casing, means for tiltinglyAsupporting sa-id packing cylinder within said-casing, said supportingmeans including .combined resilient supporting and packingelements for`the cylinder, a pump. rod lpackirig 1 plungerimounted on said pump rodto reciprocate within said packingv Ycylinder andhaving verticallyspaced packingk ring. grooves therein,

Aand split resilient packing rings arranged in said rpacking-ringgrooves.

. CY'RUS o. JETTERQ,

